18950055 has 8 divisors (see below), whose sum is σ = 30320112. Its totient is φ = 10106688.

The previous prime is 18950039. The next prime is 18950069. The reversal of 18950055 is 55005981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18950055 - 2⁴ = 18950039 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18949998 and 18950025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631654 + ... + 631683.

It is an arithmetic number, because the mean of its divisors is an integer number (3790014).

Almost surely, 2^18950055 is an apocalyptic number.

18950055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18950055 is a deficient number, since it is larger than the sum of its proper divisors (11370057).

18950055 is a wasteful number, since it uses less digits than its factorization.

18950055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263345.

The product of its (nonzero) digits is 9000, while the sum is 33.

The square root of 18950055 is about 4353.1660891815. The cubic root of 18950055 is about 266.6061468564.

The spelling of 18950055 in words is "eighteen million, nine hundred fifty thousand, fifty-five".